From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <bart.vanassche@gmail.com>
Return-Path: <bart.vanassche@gmail.com>
Subject: Re: [BUG] ext4 null pointer crash in linux-next
To: valdis.kletnieks@vt.edu, Theodore Ts'o <tytso@mit.edu>,
 Andreas Dilger <adilger.kernel@dilger.ca>, Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org,
 linux-block@vger.kernel.org
References: <36243.1539028475@turing-police.cc.vt.edu>
From: Bart Van Assche <bvanassche@acm.org>
Message-ID: <839b29df-08af-403c-da3e-e1bc9eca1685@acm.org>
Date: Mon, 8 Oct 2018 20:41:15 -0700
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List-ID: <linux-block@vger.kernel.org>

On 10/8/18 12:54 PM, valdis.kletnieks@vt.edu wrote:
> [  680.692915] RIP: 0010:__get_request+0x31/0x7e0

Can you provide the source code line number that corresponds to that 
address? If you haven't done this before: enter gdb 
${path_to_kernel_source_tree}/vmlinux in a shell and then run "list 
*(__get_request+0x31)" (without the double quotes).

Additionally, which block driver is being used in your setup under the 
ext4 filesystem?

Thanks,

Bart.